Mirroring a lot of other comments, the art in this is amazing, I like the texture used for the environment which nicely fills in the blank spaces. The wheel adds a nice dynamic and I like that the first spin gives you more control over what you need for that round.
It would be cool if you eventually get powerups that permanently upgrade your wheel spin (make it slower, spin twice, critical damage if you get two/three/four of the same type consecutively etc).
Really fun experience, nice job.